Class: Purview::Databases::Base
Instance Attribute Summary collapse
Instance Method Summary
collapse
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#baseline_table(table, timestamp = Time.now) ⇒ Object
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#create_index(index, opts = {}) ⇒ Object
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#create_table(table, opts = {}) ⇒ Object
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#disable_table(table, timestamp = Time.now) ⇒ Object
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#drop_index(index, opts = {}) ⇒ Object
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#drop_table(table, opts = {}) ⇒ Object
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#enable_table(table, timestamp = Time.now) ⇒ Object
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#initialize(name, opts = {}) ⇒ Base
constructor
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#initialize_table(table, timestamp = Time.now) ⇒ Object
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#lock_table(table, timestamp = Time.now) ⇒ Object
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#sync ⇒ Object
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#sync_table(table, timestamp = Time.now) ⇒ Object
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#table_metadata(table) ⇒ Object
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#unlock_table(table) ⇒ Object
#logger, #logger_opts, #logger_type, #with_context_logging
#blank?, #coalesced, #filter_blank_values, #filter_nil_values, #present?, #timestamp, #with_timestamp, #zero?
#dialect, #false_value, #null_value, #quoted, #sanitized, #true_value
#connect, #connection_opts, #with_new_connection, #with_new_or_existing_connection, #with_transaction
Constructor Details
#initialize(name, opts = {}) ⇒ Base
Returns a new instance of Base.
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# File 'lib/purview/databases/base.rb', line 6
def initialize(name, opts={})
@name = name.to_sym
@opts = opts
@tables = Set.new.tap do |result|
(default_tables + tables_opt).each do |table|
table.database = self if result.add?(table)
end
end
end
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Instance Attribute Details
Returns the value of attribute name.
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# File 'lib/purview/databases/base.rb', line 4
def name
@name
end
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Returns the value of attribute tables.
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# File 'lib/purview/databases/base.rb', line 4
def tables
@tables
end
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Instance Method Details
#baseline_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 16
def baseline_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
raise Purview::Exceptions::CouldNotBaselineTable.new(table) \
unless table_initialized?(table)
table_name = table_name(table)
with_context_logging("`baseline_table` for: #{table_name}") do
starting_timestamp = timestamp
with_table_locked(table, starting_timestamp) do
loop do
last_window = sync_table_without_lock(table, timestamp)
break if last_window.max > starting_timestamp
end
end
end
table_name
end
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#create_index(index, opts = {}) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 33
def create_index(index, opts={})
ensure_index_valid_for_database(index)
table_opts = (opts)
table_name = table_name(index.table, table_opts)
index_opts = (opts)
index_name = index_name(
table_name,
index,
index_opts
)
with_context_logging("`create_index` for: #{index_name}") do
with_new_or_existing_connection(opts) do |connection|
connection.execute(
create_index_sql(
table_name,
index_name,
index,
index_opts
)
)
end
end
index_name
end
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#create_table(table, opts = {}) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 58
def create_table(table, opts={})
ensure_table_valid_for_database(table)
ensure_table_metadata_exists_for_table(table)
table_opts = (opts)
table_name = table_name(table, table_opts)
with_context_logging("`create_table` for: #{table_name}") do
with_new_or_existing_connection(opts) do |connection|
connection.execute(
send(
create_table_sql_method_name(table, table_opts),
table_name,
table,
table_opts
)
)
if table_opts[:create_indices]
table.indices.each do |index|
create_index(
index,
:connection => connection,
:table => { :name => table_name }
)
end
end
end
end
table_name
end
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#disable_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 87
def disable_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
table_name = table_name(table)
with_context_logging("`disable_table` for: #{table_name}") do
with_new_connection do |connection|
rows_affected = \
connection.execute(disable_table_sql(table)).rows_affected
raise Purview::Exceptions::CouldNotDisableTable.new(table) \
if zero?(rows_affected)
end
end
table_name
end
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#drop_index(index, opts = {}) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 101
def drop_index(index, opts={})
ensure_index_valid_for_database(index)
table_opts = (opts)
table_name = table_name(index.table, table_opts)
index_opts = (opts)
index_name = index_name(
table_name,
index,
index_opts
)
with_context_logging("`drop_index` for: #{index_name}") do
with_new_or_existing_connection(opts) do |connection|
connection.execute(
drop_index_sql(
table_name,
index_name,
index,
index_opts
)
)
end
end
index_name
end
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#drop_table(table, opts = {}) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 126
def drop_table(table, opts={})
ensure_table_valid_for_database(table)
ensure_table_metadata_absent_for_table(table)
table_opts = (opts)
table_name = table_name(table, table_opts)
with_context_logging("`drop_table` for: #{table_name}") do
with_new_connection do |connection|
connection.execute(
drop_table_sql(
table_name,
table,
table_opts
)
)
end
end
table_name
end
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#enable_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 145
def enable_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
table_name = table_name(table)
with_context_logging("`enable_table` for: #{table_name}") do
with_new_connection do |connection|
rows_affected = \
connection.execute(enable_table_sql(table, timestamp)).rows_affected
raise Purview::Exceptions::CouldNotEnableTable.new(table) \
if zero?(rows_affected)
end
end
table_name
end
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#initialize_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 159
def initialize_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
table_name = table_name(table)
with_context_logging("`initialize_table` for: #{table_name}") do
with_new_connection do |connection|
rows_affected = \
connection.execute(initialize_table_sql(table, timestamp)).rows_affected
raise Purview::Exceptions::CouldNotInitializeTable.new(table) \
if zero?(rows_affected)
end
end
table_name
end
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#lock_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 173
def lock_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
table_name = table_name(table)
with_context_logging("`lock_table` for: #{table_name}") do
with_new_connection do |connection|
rows_affected = \
connection.execute(lock_table_sql(table, timestamp)).rows_affected
raise Purview::Exceptions::CouldNotLockTable.new(table) \
if zero?(rows_affected)
end
end
table_name
end
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# File 'lib/purview/databases/base.rb', line 187
def sync
with_context_logging('`sync`') do
with_timestamp do |timestamp|
with_next_table(timestamp) do |table|
sync_table_with_lock(table, timestamp)
end
end
end
end
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#sync_table(table, timestamp = Time.now) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 197
def sync_table(table, timestamp=Time.now)
ensure_table_valid_for_database(table)
raise Purview::Exceptions::CouldNotSyncTable.new(table) \
unless table_initialized?(table) && table_enabled?(table)
table_name = table_name(table)
with_context_logging("`sync_table` for: #{table_name}") do
sync_table_with_lock(table, timestamp)
end
table_name
end
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# File 'lib/purview/databases/base.rb', line 208
def table_metadata(table)
ensure_table_valid_for_database(table)
table_metadata = nil
table_name = table_name(table)
with_context_logging("`table_metadata` for: #{table_name}") do
with_new_connection do |connection|
table_metadata = Purview::Structs::TableMetadata.new(
table_metadata_table.columns.reduce({}) do |memo, column|
memo[column.name] = get_table_metadata_value(
connection,
table,
column
)
memo
end
)
end
end
table_metadata
end
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#unlock_table(table) ⇒ Object
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# File 'lib/purview/databases/base.rb', line 229
def unlock_table(table)
ensure_table_valid_for_database(table)
table_name = table_name(table)
with_context_logging("`unlock_table` for: #{table_name}") do
with_new_connection do |connection|
rows_affected = \
connection.execute(unlock_table_sql(table)).rows_affected
raise Purview::Exceptions::CouldNotUnlockTable.new(table) \
if zero?(rows_affected)
end
end
table_name
end
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